There’s the new Pretty Little Liars: The Perfectionists show, the return of Glenn Howerton’s mock vampire documentary What We Do in the Shadows and AP Bio, The Great British Bake Off and more. . .

Take of the day

Pretty Little Liars: The Perfectionists, 11 p.m., RTÉ2

Here is an American crime drama – a sequel to the famous Pretty little Liars – follow the life of a group of young students in the city of Beacon Heights, where all is not as it seems.

Located a few years after the events of Pretty little Liars, three college friends struggle with the stress of over-performing.

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Meanwhile, Alison DiLaurentis and Mona Vanderwaal have left Rosewood to travel to Beacon Heights for a new start with their careers and family.

When a murder happens at the prestigious Beacon Heights University – where excellence is a requirement – everyone is pissed off.

The seemingly perfect city might not be so perfect after all.

Do not miss

UK Sitcom: 60 Years of Laughing at Ourselves, 9:30 p.m. BBC Four

After a triple treatment of episodes of The good life, One foot in the grave and The Royle family, this documentary nicely complements the sitcom Tuesday on BBC Four.

It’s a journey through the history of the British TV sitcom, from Hancock’s half-hour in the 1950s to shows today.

It also reveals the inspiration behind some of the most enduring characters and how comedy has reflected changing attitudes in society.

Narrated by Rebecca Front (above), it features contributions from writers and actors such as Steve Coogan, Richard Curtis, James Corden, Graham Linehan, Dick Clement and Ian La Frenais.

The Great British Bake Off, 8:00 p.m., Canal 4

It’s sticky fingers all around like Noel Fielding and Matt Lucas present as bakers put their twists on a classic caramel pie.

Next, they have to produce a family favorite cookie bar in the technique, before creating a mind-blowing dessert enclosed in a sugar dome.

Paul Hollywood and Prue Leith judge their efforts, deciding who wins the star baker and who gets home.

Designed for Life, 8:30 p.m., RTÉ One

Arlene McIntyre’s latest challenge is a Victorian house in Dublin with two reception rooms, and owner Patricia is keen to keep the design retaining its period charm.

Impeachment: American Crime Story, 9:10 p.m., BBC Two

The story of Clinton’s impeachment with Sarah Paulson and Beanie Feldstein continues.

It is 1997, and Linda disconcerts Monica when she decides to make her voice heard.

Meanwhile, the Supreme Court is unanimous in allowing Paula’s trial to continue. Clinton must consider settling the matter, which his opponents do not want to happen.

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New or old shows

What we do in the shadows, 10:05 p.m., BBC Two

Return of the often hilarious mock vampiric documentary, starring Matt Berry, Kayvan Novak and Natasia Demetriou, which is essentially a New York-based version of the New Zealand film of the same name.

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As season three begins, the fate of Guillermo – Nandor’s longtime Latino familiar – hangs in the balance as the vampires receive a promotion.

AP Bio, 10:00 p.m., Sky Comedy

Broadcast on NOW

This is the fourth season of the acclaimed comedy that revolves around the nightmare professor Jack Griffin, played by Glenn Howerton.

It revolves around Griffin, his long-suffering honor roll class of students, and other unsuitable faculty members at Whitlock High School.

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In the first episode, a tornado locks the school out and Helen thinks it’s coming especially for her.

The kids pass the time by writing fanfiction, “dispatching” various combinations of faculty members, while Mary, Stef and Michelle hatch a plan to escape school.

Next, Jack asks the students to form a fake cult to sabotage Principal Durbin’s new school uniforms, and Mary, Stef and Michelle prepare to see one of their favorite artists who is in town to perform.

Celebrity Antiques Road Trip, 7:00 p.m., BBC Two

More famous faces take on the challenge of treasure hunting across the country.

First up, model Jerry Hall and psychotherapist and TV presenter Philippa Perry hit the road with antiques experts Tim Medhurst and Charles Hanson.

New to broadcast

Camp Confidential: America’s Secret Nazis, Netflix

In this animated documentary short, WWII veterans reveal a secret U.S. military camp near Washington where Jewish soldiers sheltered and interrogated Nazi prisoners of war.

Ridley Jones: Season 2, Netflix

The magic of the museum continues for brave kid Ridley and his brave crew with new friends, riskier missions, and Ridley’s quest for his Compass Eye!

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